Television – Bandwidth reduction system – Multiple channel
Patent
1992-05-14
1994-11-22
Harvey, David E.
Television
Bandwidth reduction system
Multiple channel
348390, 348438, 348705, H04N 713
Patent
active
053673344
ABSTRACT:
An encoding and decoding apparatus for a video signal and a high-definition television signal is disclosed. For the picture A having the horizontal to vertical screen frame ratio of 4:3, the picture B having the horizontal to vertical screen frame ratio of 16:9 and the picture C having the horizontal to vertical screen frame ratio of 16:9 and having a larger number of vertical pixels than that of the picture A and picture B, the apparatus limits the band of the picture C to obtain the picture D having the same numbers of horizontal and vertical pixels respectively as those of the picture B, and high-efficiency encodes the picture A, picture B or picture D in the same method. The apparatus obtains the additional picture E which is a difference between the picture D and the picture C, or a difference between the picture D' which is a result of decoding a signal that has been obtained by high-efficiency encoding the picture D and the picture C, and then high-efficiency encodes the additional picture E obtained.
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Tsuchida et al.; Multi-Picture System for High Resolution Wide Aspect Ratio Screen; IEEE Transactions on Consumer Electronics, vol. 37, No. 3, Aug. 1991, New York US pp. 313-319.
Awamoto Shigeru
Juri Tatsuro
Matsuta Toyohiko
Nishino Masakazu
Yamamitsu Chojuro
Harvey David E.
Matsushita Electric - Industrial Co., Ltd.
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